Self-fastened heat sink



FIG. 1 is a perspective view of a self-fastened heat sink showing our new design, the integrated circuit being shown in broken lines for illustrative purposes only.

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a side elevational view thereof, looking toward the right side thereof as it is shown in FIGS. 1 and 2; and

FIG. 7 is a side elevational view thereof looking toward the left side thereof as it is shown in FIGS. 1 and 2. 

The ornamental design a self-fastened heat sink, substantially as shown and described. 